#include <iostream>
#include <string>
#include <unordered_map>

using namespace std;


int main()
{
    unordered_map<string, int> mymap;
    mymap["koukou"] = 100;
    mymap["koukou"] ++;
    cout << "mymap['koukou'] is :" << mymap["koukou"] << endl;
    return 0;
}